Textbook-Integrated Guide to Educational Resources

TIGER

Endothermic ReactionSolid barium hydroxide octahydrate (Ba(OH)2*8H2O) and ammonium thiocyanate (NH4SCN) are mixed in a beaker, which is then placed on a few drops of water on a small board. The reaction that occurs is highly endothermic.

Calorimetry / Thermochemistry |

Thermodynamics

EntropyThese processes are shown in reverse. The situations shown are so highly improbable that we would not expect to observe them in nature.